'All night' in the Bible

It repents Me that I have set up Saul to be king. For he has turned back from following Me and has not done My commands. And it grieved Samuel, and he cried out to Jehovah all night.

And Saul immediately fell headlong on the earth, and was sorely afraid because of the words of Samuel. And there was no strength in him, for he had eaten no bread all day nor all night.

then all the brave men arose, and they traveled all night. And they took the body of Saul and the bodies of his sons from the wall of Beth-shan, and came to Jabesh, and burned them there.